229801943538 has 64 divisors (see below), whose sum is σ = 522610053120. Its totient is φ = 74816500176.

The previous prime is 229801943537. The next prime is 229801943561. The reversal of 229801943538 is 835349108922.

229801943538 is a `hidden beast` number, since 2 + 2 + 98 + 0 + 19 + 4 + 3 + 538 = 666.

229801943538 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (229801943533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1143045 + ... + 1328967.

It is an arithmetic number, because the mean of its divisors is an integer number (8165782080).

Almost surely, 2^229801943538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229801943538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261305026560).

229801943538 is an abundant number, since it is smaller than the sum of its proper divisors (292808109582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229801943538 is a wasteful number, since it uses less digits than its factorization.

229801943538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186468 (or 186462 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 229801943538 in words is "two hundred twenty-nine billion, eight hundred one million, nine hundred forty-three thousand, five hundred thirty-eight".